turpentine weed

== English == === Alternative forms === turpentineweed === Noun === turpentine weed (uncountable) A plant of species Gutierrezia sarothrae. A plant of species Silphium perfoliatum, native to eastern and central North America. A plant of species Silphium terebinthinaceum A plant of species Trichostema lanceolatum, native to western North America. A plant of species Trichostema laxum.